<p>There are 2 questions in this link:</p>
<p>math</a> - Minus.com</p>
<ol>
<li> Approach this problem by plugging in positive integers, starting with 1, then 2, etc.
If x = 1 and y = 1, z is negative so this set of numbers is out. To make z positive, let’s increase x to 2.
If x = 2 and y = 1, then z is 30. So x = 2 satisfies the requirement that z is a positive integer.</li>
</ol>
<p>Answer: x = 2</p>
<p>For Q#34 x=2</p>
<p>30=45(2)-60(1)</p>
<p>x cant be 1 because y must at least be 1 which would make z=-15 which it cannot because it must be a positive integer</p>
<p>I am too tired to try to figure out #18.</p>
<p>Thanks. BTW, does anyone know what criteria triangles have to fulfill to be considered similar?</p>
<p>18.
.30608 = .3 + .006 + .00008
.3 = 3/(10^1) so j = 1
.006 = 6/(10^3) so k = 3
.00008 = 8/(10^5) so n = 5</p>
<p>j + k + n = 1 + 3 + 5 = 9
Answer: D</p>
<p>^I was trying to figure why 0.30608 was chosen … thanks for the explanation! That makes perfect sense :).</p>
<p>Proving Triangles Similar
AA, SAS, SSS <a href=“http://www.knowgeometry.com/1st%20Semester%20Notes-PowerPoints/7-3%20Proving%20Triangles%20Similar%20AA%20SAS%20SSS%20.ppt[/url]”>http://www.knowgeometry.com/1st%20Semester%20Notes-PowerPoints/7-3%20Proving%20Triangles%20Similar%20AA%20SAS%20SSS%20.ppt</a></p>